General guide

When the electrical system is operating normally the battery will not be charging nor discharging! This is because the battery is fully charged and the bike is 'running' off the alternator. To get to this state the battery must be recharged to make up for the large discharge of the stater motor, this may take 15 minutes. So brief measurements of the battery current won't tell you much.

The voltage readings tell a lot more .. anything less than 13 volts is bad when the bike is running. Less than 12 is untenable and you need to instantly reduce the electrical load.

The battery should sit at 13 volts or more for say 15 minutes before you shut the bike down - this ensures you have some charge in the battery to start the bike next time.

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Barry
Did the bike carry this electrical load at some previous time? Or have you just made the changes and found this problem? :confused1:

This tells us that

1) the bike can do it
OR
2) the bike may not do it .. simply too much load.

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You certainly cannot increase your present electrical load (under present conditions)! You would be well advised to actually reduce it! To start with the dual high beam - make it single, or keep to low beam.

For wiring faults; Check the wires and connectors ... for heat - use your hands to feel for it .. where it is warm you have a problem ... do this with your high electrical load on. The places you want to check are from the alternator to the battery - around the rectifier/regulator is a good place to start. Try not to burn yourself

Good luck.